package day6;

import java.util.Random;

public class t3 {
    public static void main(String[] args) {
        char []arr= new char[52];
        for (int i = 0; i < 26; i++) {
            arr[i]=(char)('a'+i);
        }
        for (int i = 26; i < 52; i++) {
            arr[i]=(char)('A'+i-26);
        }
        Random r =new Random();
        int x= r.nextInt(52);
        char c1=arr[x];
        x= r.nextInt(52);
        char c2=arr[x];
        x= r.nextInt(52);
        char c3=arr[x];
        x= r.nextInt(52);
        char c4=arr[x];
        int c5=r.nextInt(10);
        System.out.print(c1+""+c2+""+c3+""+c4+""+c5);
    }
}
